In a Chemistry Lab because of some of the ongoing experiments gas leakage might happen that pollutes the air . Also some of biological experiments might pollute the environment.
Most chemical changes happen between molecules, so they are unseen.
Cytoplasm
A fire is a chemical change due to the irreversible changes that happen.
Cooking involves chemical changes.
volcanic eruption
E
The majority of these changes are recognized.
something
It begins to boil.
magnesium sulphate
No, chemical changes and physical changes are distinct processes that occur separately in a system. Chemical changes involve the formation of new substances with different chemical properties, while physical changes involve alterations in the state or appearance of a substance without changing its chemical composition. These processes do not typically occur simultaneously.
Chemical changes in a structure are most likely to happen during a chemical reaction where bonds are broken and formed between atoms. This can occur when new substances are formed, leading to a change in the composition and properties of the structure.